DE2031898A1 - - Google Patents
Info
- Publication number
- DE2031898A1 DE2031898A1 DE19702031898 DE2031898A DE2031898A1 DE 2031898 A1 DE2031898 A1 DE 2031898A1 DE 19702031898 DE19702031898 DE 19702031898 DE 2031898 A DE2031898 A DE 2031898A DE 2031898 A1 DE2031898 A1 DE 2031898A1
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- mirror
- microphone
- light
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000012528 membrane Substances 0.000 claims description 41
- 230000003287 optical effect Effects 0.000 claims description 16
- 230000010363 phase shift Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000005304 optical glass Substances 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 2
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 claims 1
- 230000002452 interceptive effect Effects 0.000 claims 1
- 230000004048 modification Effects 0.000 description 10
- 238000012986 modification Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000001419 dependent effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Optical Communication System (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR6921769A FR2050890A5 (ja) | 1969-06-27 | 1969-06-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2031898A1 true DE2031898A1 (ja) | 1971-02-11 |
| DE2031898B2 DE2031898B2 (de) | 1971-09-30 |
Family
ID=9036518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702031898 Withdrawn DE2031898B2 (de) | 1969-06-27 | 1970-06-27 | Mikrofon zur umwandlung akustischer schwingungen in eine elektrische impulsfolge |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3622791A (ja) |
| DE (1) | DE2031898B2 (ja) |
| FR (1) | FR2050890A5 (ja) |
| GB (1) | GB1267632A (ja) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4088885A (en) * | 1976-07-26 | 1978-05-09 | Gte Laboratories Incorporated | Method and apparatus for modulating an optical signal |
| US4209767A (en) * | 1977-03-03 | 1980-06-24 | The United States Of America As Represented By The Secretary Of The Navy | Acousto-optic coupler for glide slope control systems |
| US4395593A (en) * | 1979-11-27 | 1983-07-26 | Bell Telephone Laboratories, Incorporated | Acoustic differential digital coder |
| JPS57149000U (ja) * | 1981-03-12 | 1982-09-18 | ||
| US4412105A (en) * | 1982-03-08 | 1983-10-25 | Muscatell Ralph P | Laser microphone |
| US4515997A (en) * | 1982-09-23 | 1985-05-07 | Stinger Jr Walter E | Direct digital loudspeaker |
| US4518992A (en) * | 1982-11-17 | 1985-05-21 | Sonoscan, Inc. | Acoustic imaging system and method |
| US4479265A (en) * | 1982-11-26 | 1984-10-23 | Muscatell Ralph P | Laser microphone |
| US4665747A (en) * | 1985-04-19 | 1987-05-19 | Muscatell Ralph P | Flight instrument using light interference for pressure sensing |
| US4736740A (en) * | 1985-09-09 | 1988-04-12 | Robin Parker | Gas mask with voice communication device |
| US4882773A (en) * | 1988-05-05 | 1989-11-21 | Donald A. Streck | Audio microphone system with digital output and volume control feedback input |
| US5262884A (en) * | 1991-10-09 | 1993-11-16 | Micro-Optics Technologies, Inc. | Optical microphone with vibrating optical element |
| US5621806A (en) * | 1992-02-14 | 1997-04-15 | Texas Instruments Incorporated | Apparatus and methods for determining the relative displacement of an object |
| US5473726A (en) * | 1993-07-06 | 1995-12-05 | The United States Of America As Represented By The Secretary Of The Air Force | Audio and amplitude modulated photo data collection for speech recognition |
| DE19623504C1 (de) * | 1996-06-13 | 1997-07-10 | Deutsche Forsch Luft Raumfahrt | Optisches Mikrophon |
| US6301034B1 (en) | 1997-10-22 | 2001-10-09 | John R. Speciale | Pulsed laser microphone |
| JP3377173B2 (ja) * | 1998-02-16 | 2003-02-17 | 松下電器産業株式会社 | ディジタル式電気音響変換器 |
| DE19835947C2 (de) * | 1998-08-08 | 2002-07-11 | Sennheiser Electronic | Optisches Mikrofon |
| US6590661B1 (en) | 1999-01-20 | 2003-07-08 | J. Mitchell Shnier | Optical methods for selectively sensing remote vocal sound waves |
| JP2001119785A (ja) * | 1999-10-15 | 2001-04-27 | Phone Or Ltd | 収音装置 |
| JP2001119783A (ja) * | 1999-10-15 | 2001-04-27 | Phone Or Ltd | マイクロフォン付ビデオカメラ |
| US6924475B2 (en) * | 2002-05-10 | 2005-08-02 | Phone-Or Ltd. | Optical transducers and method of making same |
| DE10314731A1 (de) * | 2003-03-31 | 2004-10-28 | Sennheiser Electronic Gmbh & Co. Kg | Sensor bzw. Mikrofon mit einem solchen Sensor |
| JP4522348B2 (ja) * | 2005-09-20 | 2010-08-11 | ローランド株式会社 | スピーカ装置 |
| FI20060259A0 (fi) | 2006-03-17 | 2006-03-17 | Noveltech Solutions Oy | Optinen audiomikrofonijärjestely |
| US8594507B2 (en) * | 2011-06-16 | 2013-11-26 | Honeywell International Inc. | Method and apparatus for measuring gas concentrations |
| US20120321322A1 (en) * | 2011-06-16 | 2012-12-20 | Honeywell International Inc. | Optical microphone |
| US9014358B2 (en) * | 2011-09-01 | 2015-04-21 | Blackberry Limited | Conferenced voice to text transcription |
| US9945979B2 (en) * | 2013-08-02 | 2018-04-17 | Halliburton Energy Services, Inc. | Acoustic sensor metadata dubbing channel |
| GB201807889D0 (en) | 2018-05-15 | 2018-06-27 | Sintef Tto As | Microphone housing |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2997922A (en) * | 1958-04-24 | 1961-08-29 | Edward K Kaprelian | Light valve |
| US3175088A (en) * | 1961-06-22 | 1965-03-23 | Bell Telephone Labor Inc | Optical frequency modulation and heterodyne recovery system |
| US3286032A (en) * | 1963-06-03 | 1966-11-15 | Itt | Digital microphone |
| US3433959A (en) * | 1966-07-25 | 1969-03-18 | Perkin Elmer Corp | Microphone |
-
1969
- 1969-06-27 FR FR6921769A patent/FR2050890A5/fr not_active Expired
-
1970
- 1970-05-07 US US35351A patent/US3622791A/en not_active Expired - Lifetime
- 1970-05-07 GB GB21985/70A patent/GB1267632A/en not_active Expired
- 1970-06-27 DE DE19702031898 patent/DE2031898B2/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB1267632A (en) | 1972-03-22 |
| US3622791A (en) | 1971-11-23 |
| FR2050890A5 (ja) | 1971-04-02 |
| DE2031898B2 (de) | 1971-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E77 | Valid patent as to the heymanns-index 1977 | ||
| 8339 | Ceased/non-payment of the annual fee |